4.7 Article

Stress optimization of smooth continuum structures based on the distortion strain energy density

期刊

出版社

ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2018.08.031

关键词

Topology optimization; Distortion strain energy density; Evolutionary topology optimization; Smooth topology

资金

  1. Australian Research Council [FT130101094]

向作者/读者索取更多资源

This paper presents an evolutionary structural optimization method of designing continuum structures with clear and smooth boundaries for stress minimization. The stress optimization problem is formulated with the P-norm function based on the distortion strain energy density, so as to avoid the stress relaxation and the local nature of the maximum stress. In order to obtain a smooth topology, the surrogate design variables on the volume fraction of elements are defined based on the proportion of solid and void points within an element. Based on sensitivity analysis, topology optimization evolves the structure by gradually decreasing the structural volume to the optimized one with the prescribed volume. 2D and 3D numerical examples are presented and discussed to demonstrate the effectiveness of the proposed topology optimization method for minimizing the maximum stress of continuum structures and alleviating stress concentration. (C) 2018 Elsevier B.V. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Engineering, Multidisciplinary

Inverse design of second-order photonic topological insulators in C3-symmetric lattices

Yafeng Chen, Fei Meng, Jie Zhu, Xiaodong Huang

Summary: The study introduces a BESO method to design photonic topological insulators with topological edge and corner states. By optimizing the photonic crystal, a topological phase transition is achieved to form highly localized edge and corner states. This new design route paves the way for practical applications.

APPLIED MATHEMATICAL MODELLING (2022)

Article Engineering, Multidisciplinary

Stress-based bi-directional evolutionary structural topology optimization considering nonlinear continuum damage

Yongsheng Han, Bin Xu, Zunyi Duan, Xiaodong Huang

Summary: This paper proposes a new methodology for structural topology optimization that takes into account non-linear continuum damage for stress minimization design. A quasi-static non-local damage model is integrated into a linear finite element analysis to model the structural damage, and the Bi-directional Evolutionary Structural Optimization (BESO) method is used to address singularity issues. The effectiveness of the proposed method is demonstrated through numerical tests and comparison with stiffness maximization design.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2022)

Article Engineering, Multidisciplinary

Stress-based multi-material structural topology optimization considering graded interfaces

Yongsheng Han, Bin Xu, Zunyi Duan, Xiaodong Huang

Summary: This paper proposes a topology optimization method for multi-material structures with graded interfaces to minimize the maximum von Mises stress. The method uses a filter-based approach to determine the locations and widths of the interfaces, and employs an extended Bi-directional Evolutionary Structural Optimization (BESO) method to avoid stress singularity. The effectiveness of the proposed method is validated through benchmark numerical examples.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2022)

Article Computer Science, Interdisciplinary Applications

A cascadic multilevel optimization framework for the concurrent design of the fiber-reinforced composite structure through the NURBS surface

Haoqing Ding, Bin Xu, Zunyi Duan, Weibai Li, Xiaodong Huang

Summary: This paper proposes a cascading multilevel optimization framework for fiber-reinforced composite structures, using non-uniform rational basis spline (NURBS) surfaces. The framework allows for control of structural topology, fiber angle distribution, and improves computational efficiency. By formulating and solving the optimization problem successively from a coarse mesh level to the finest mesh level, the computational cost is reduced while maintaining the design freedom and resolution. The NURBS surface also improves the continuity of local fiber angles and avoids the checkerboard phenomenon.

ENGINEERING WITH COMPUTERS (2023)

Review Materials Science, Multidisciplinary

Additively manufactured fiber-reinforced composites: A review of mechanical behavior and opportunities

Jiahui Li, Yvonne Durandet, Xiaodong Huang, Guangyong Sun, Dong Ruan

Summary: This paper comprehensively reviews the mechanical properties and deformation mechanisms of discontinuous and continuous fiber-reinforced composites fabricated by various additive manufacturing techniques. The effects of fiber type, orientation, weight/volume fraction, printing path, and stacking sequence on the mechanical properties of additively manufactured composites are discussed. Additionally, the applications of additively manufactured composites, the main challenges of current additive manufacturing techniques, and recommendations for future work are presented.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2022)

Article Mechanics

Lightweight Optimization Design of Structures with Multiple Cellular Materials

Weibai Li, Xiaodong Huang

Summary: This paper develops a topology optimization algorithm for lightweight design of structures using multiple cellular materials. The algorithm incorporates the microstructures and homogenized mechanical properties of cellular materials into topology optimization. Numerical examples demonstrate the successful implementation of the algorithm by optimizing the distribution and selection of multiple cellular materials.

INTERNATIONAL JOURNAL OF APPLIED MECHANICS (2022)

Article Chemistry, Multidisciplinary

Observation of Emergent Dirac Physics at the Surfaces of Acoustic Higher-Order Topological Insulators

Fei Meng, Zhi-Kang Lin, Weibai Li, Peiguang Yan, Yun Zheng, Xinping Li, Jian-Hua Jiang, Baohua Jia, Xiaodong Huang

Summary: This study demonstrates the discovery of 2D surface states described by spin-1 Dirac equations at the interfaces between two sonic crystals with distinct topology but the same crystalline symmetry. The Dirac mass of these surface states can be tuned by the geometry of the crystals. The study also confirms the existence of zero refractive index behavior and emergent topological hinge states.

ADVANCED SCIENCE (2022)

Article Engineering, Multidisciplinary

Three-field floating projection topology optimization of continuum structures

Xiaodong Huang, Weibai Li

Summary: This paper proposes a three-field floating projection topology optimization (FPTO) method using linear material interpolation. The method enhances the formation of structural topology and can be extended to robust formulation. The effectiveness and advantage of the proposed method are demonstrated through numerical examples.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2022)

Article Mechanics

Manufacturing-oriented topological design of CFRC structures with variable fiber volume and orientation

Xiaolei Yan, Minchao Lai, Dengfeng Huang, Yong Zhang, Xiaodong Huang

Summary: This paper proposes a manufacturing-oriented topology optimization method for designing continuous fiber reinforced composite structures. The method optimizes both the fiber content and fiber orientation, achieving a smooth design with explicit boundary. To improve manufacturability, a fiber placement path fitting method based on the potential flow theory is proposed and embedded in the optimization procedure.

COMPOSITE STRUCTURES (2023)

Article Engineering, Mechanical

Ultrathin waterborne acoustic metasurface for uniform diffuse reflections

Tianbao Liang, Mu He, Hao-Wen Dong, Liang Xia, Xiaodong Huang

Summary: This research proposes a novel design strategy for ultrathin and highly efficient waterborne reflective pentamode metasurfaces to achieve uniform diffuse reflections in underwater scenes. A theoretical model is established to ease the demand on impedance matching and construct an ideal diffusion field. The spatially variant equivalent impedances of the metasurface are identified, and their corresponding pentamode material configurations are inversely designed with band structure analyses. Numerical results show high performance at the targeted frequency, and further verifications reveal applicability to a broader frequency range, paving the way for deep subwavelength scale acoustic wave manipulations with ultrathin waterborne metasurfaces.

MECHANICAL SYSTEMS AND SIGNAL PROCESSING (2023)

Article Engineering, Manufacturing

Acoustic performance of epoxy-based composites incorporating fluorescent single-walled carbon nanotubes

Verena Wulf, Ada Pui-yan Hung, Adi Hendler-Neumark, Weibai Li, Olga Shamis, Michael Gozin, Xiaodong Huang, Alan Kin Tak Lau, Gili Bisker

Summary: Noise pollution poses a threat to health and well-being, and its prevalence has been increasing. Incorporating fluorescent single-walled carbon nanotubes (SWCNTs) into epoxy resins can improve their sound-dampening capabilities. The DNA-SWCNT/epoxy composites showed the highest transmission loss, with an 18% improvement compared to epoxy alone, and the optimal concentration of DNA-SWCNT was found to be 2 mg L-1. Additionally, the near-infrared fluorescence of SWCNTs was utilized to characterize their distribution within the epoxy resin.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2023)

Article Engineering, Civil

Effect of different fatigue constraints on optimal topology of structures with minimum weight

Khodamorad Nabaki, Jianhu Shen, Xiaodong Huang

Summary: Fatigue, an important failure criterion in engineering problems, has been considered in topology optimization. Different optimal topologies have been obtained based on different fatigue criteria. This paper explores the effect of different fatigue criteria on optimal designs using bi-directional evolutionary structural optimization and a modified p-norm approach. The results provide useful reference for engineers to design structures to avoid high frequency fatigue failure.

ENGINEERING STRUCTURES (2023)

Article Engineering, Mechanical

Tunable bandgaps and acoustic characteristics of perforated Miura-ori phononic structures

Xi Zhang, Xiaodong Huang, Guoxing Lu

Summary: In this study, a novel perforated Miura-ori phononic structure (PMPS) is introduced, and the tunability of complete or partial bandgaps in specific directions is investigated. The validity of the bandgaps is verified through simulation and experimental measurement of sound transmission loss in a three-dimensional printed Miura-ori panel. The results demonstrate extensive bandgap tunability of PMPS with different design parameters during deployments and folds. Additionally, potential applications of PMPS, such as programmable acoustic waveguides, are demonstrated. Lightweight PMPSs offer an attractive alternative for designing tunable, programmable, and reconfigurable acoustic structures, including sound waveguides, sound barriers, and broadband wave tailors.

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES (2023)

Article Engineering, Mechanical

Multi-objective optimization of elastic metaplates for lightweight and ultrawide bandgaps

Gengwang Yan, Yingli Li, Xiaodong Huang, Song Yao, Wenxi Zhou

Summary: A multi-objective topological optimization method for elastic metaplates (EMPs) is proposed, combining the non-dominated sorting genetic algorithm-II (NSGA-II) and the improved fast plane wave expansion method (IFPWEM) to achieve high efficiency and accuracy in lightweight and bandgap characteristics. The results show that initial designs with concentrated scatterers can produce more structurally diverse Pareto front solutions. The appropriate mesh resolution and number of iterations are determined based on convergence and computational costs. A post-processing method is proposed to improve manufacturability and achieve convergence earlier, and the method demonstrates improved bandgap characteristics compared to conventional unit cells.

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES (2023)

Article Engineering, Multidisciplinary

Topology optimization for maximizing buckling strength using a linear material model

Tao Xu, Xiaodong Huang, Xiaoshan Lin, Yi Min Xie

Summary: In this study, an innovative algorithm that utilizes a linear material interpolation scheme is introduced to maximize the buckling resistance of structures. The linear material model offers advantages such as eliminating the need to select penalization schemes and penalty values, facilitating straightforward sensitivity analysis, and removing the ambiguous physical meaning of penalization for the stress stiffness matrix. The proposed approach is supported by examples, demonstrating its effectiveness and efficiency.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2023)

Article Engineering, Multidisciplinary

Probabilistic physics-guided transfer learning for material property prediction in extrusion deposition additive manufacturing

Akshay J. Thomas, Mateusz Jaszczuk, Eduardo Barocio, Gourab Ghosh, Ilias Bilionis, R. Byron Pipes

Summary: We propose a physics-guided transfer learning approach to predict the thermal conductivity of additively manufactured short-fiber reinforced polymers using micro-structural characteristics obtained from tensile tests. A Bayesian framework is developed to transfer the thermal conductivity properties across different extrusion deposition additive manufacturing systems. The experimental results demonstrate the effectiveness and reliability of our method in accounting for epistemic and aleatory uncertainties.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

Discovering a reaction-diffusion model for Alzheimer's disease by combining PINNs with symbolic regression

Zhen Zhang, Zongren Zou, Ellen Kuhl, George Em Karniadakis

Summary: In this study, deep learning and artificial intelligence were used to discover a mathematical model for the progression of Alzheimer's disease. By analyzing longitudinal tau positron emission tomography data, a reaction-diffusion type partial differential equation for tau protein misfolding and spreading was discovered. The results showed different misfolding models for Alzheimer's and healthy control groups, indicating faster misfolding in Alzheimer's group. The study provides a foundation for early diagnosis and treatment of Alzheimer's disease and other misfolding-protein based neurodegenerative disorders using image-based technologies.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

A neural network-based enrichment of reproducing kernel approximation for modeling brittle fracture

Jonghyuk Baek, Jiun-Shyan Chen

Summary: This paper introduces an improved neural network-enhanced reproducing kernel particle method for modeling the localization of brittle fractures. By adding a neural network approximation to the background reproducing kernel approximation, the method allows for the automatic location and insertion of discontinuities in the function space, enhancing the modeling effectiveness. The proposed method uses an energy-based loss function for optimization and regularizes the approximation results through constraints on the spatial gradient of the parametric coordinates, ensuring convergence.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

Stabilized mixed material point method for incompressible fluid flow

Bodhinanda Chandra, Ryota Hashimoto, Shinnosuke Matsumi, Ken Kamrin, Kenichi Soga

Summary: This paper proposes new and robust stabilization strategies for accurately modeling incompressible fluid flow problems in the material point method (MPM). The proposed approach adopts a monolithic displacement-pressure formulation and integrates two stabilization strategies to ensure stability. The effectiveness of the proposed method is validated through benchmark cases and real-world scenarios involving violent free-surface fluid motion.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

A unified analytical expression of the tangent stiffness matrix of holonomic constraints

Chao Peng, Alessandro Tasora, Dario Fusai, Dario Mangoni

Summary: This article discusses the importance of the tangent stiffness matrix of constraints in multibody systems and provides a general formulation based on quaternion parametrization. The article also presents the analytical expression of the tangent stiffness matrix derived through linearization. Examples demonstrate the positive effect of this additional stiffness term on static and eigenvalue analyses.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

On the detection of nonlinear normal mode-related isolated branches of periodic solutions for high-dimensional nonlinear mechanical systems with frictionless contact interfaces

Thibaut Vadcard, Fabrice Thouverez, Alain Batailly

Summary: This contribution presents a methodology for detecting isolated branches of periodic solutions to nonlinear mechanical equations. The method combines harmonic balance method-based solving procedure with the Melnikov energy principle. It is able to predict the location of isolated branches of solutions near families of autonomous periodic solutions. The relevance and accuracy of this methodology are demonstrated through academic and industrial applications.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

Machine learning powered sketch aided design via topology optimization

Weisheng Zhang, Yue Wang, Sung-Kie Youn, Xu Guo

Summary: This study proposes a sketch-guided topology optimization approach based on machine learning, which incorporates computer sketches as constraint functions to improve the efficiency of computer-aided structural design models and meet the design intention and requirements of designers.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

Reduced order isogeometric boundary element methods for CAD-integrated shape optimization in electromagnetic scattering

Leilei Chen, Zhongwang Wang, Haojie Lian, Yujing Ma, Zhuxuan Meng, Pei Li, Chensen Ding, Stephane P. A. Bordas

Summary: This paper presents a model order reduction method for electromagnetic boundary element analysis and extends it to computer-aided design integrated shape optimization of multi-frequency electromagnetic scattering problems. The proposed method utilizes a series expansion technique and the second-order Arnoldi procedure to reduce the order of original systems. It also employs the isogeometric boundary element method to ensure geometric exactness and avoid re-meshing during shape optimization. The Grey Wolf Optimization-Artificial Neural Network is used as a surrogate model for shape optimization, with radar cross section as the objective function.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

Volume conservation issue within SPH models for long-time simulations of violent free-surface flows

C. Pilloton, P. N. Sun, X. Zhang, A. Colagrossi

Summary: This paper investigates the smoothed particle hydrodynamics (SPH) simulations of violent sloshing flows and discusses the impact of volume conservation errors on the simulation results. Different techniques are used to directly measure the particles' volumes and stabilization terms are introduced to control the errors. Experimental comparisons demonstrate the effectiveness of the numerical techniques.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

Convolution finite element based digital image correlation for and strain measurements

Ye Lu, Weidong Zhu

Summary: This work presents a novel global digital image correlation (DIC) method based on a convolution finite element (C-FE) approximation. The C-FE based DIC provides highly smooth and accurate displacement and strain results with the same element size as the usual finite element (FE) based DIC. The proposed method's formulation and implementation, as well as the controlling parameters, have been discussed in detail. The C-FE method outperformed the FE method in all tested examples, demonstrating its potential for highly smooth, accurate, and robust DIC analysis.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

Optimization based on performance of lungs in body: Lungs performance-based optimization (LPO)

Mojtaba Ghasemi, Mohsen Zare, Amir Zahedi, Pavel Trojovsky, Laith Abualigah, Eva Trojovska

Summary: This paper introduces Lung performance-based optimization (LPO), a novel algorithm that draws inspiration from the efficient oxygen exchange in the lungs. Through experiments and comparisons with contemporary algorithms, LPO demonstrates its effectiveness in solving complex optimization problems and shows potential for a wide range of applications.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

Integrated optimization of components' layout and structural topology with considering the interface stress constraint

Jingyu Hu, Yang Liu, Huixin Huang, Shutian Liu

Summary: In this study, a new topology optimization method is proposed for structures with embedded components, considering the tension/compression asymmetric interface stress constraint. The method optimizes the topology of the host structure and the layout of embedded components simultaneously, and a new interpolation model is developed to determine interface layers between the host structure and embedded components.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

The anisotropic graph neural network model with multiscale and nonlinear characteristic for turbulence simulation

Qiang Liu, Wei Zhu, Xiyu Jia, Feng Ma, Jun Wen, Yixiong Wu, Kuangqi Chen, Zhenhai Zhang, Shuang Wang

Summary: In this study, a multiscale and nonlinear turbulence characteristic extraction model using a graph neural network was designed. This model can directly compute turbulence data without resorting to simplified formulas. Experimental results demonstrate that the model has high computational performance in turbulence calculation.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

Multi-temporal decomposition for elastoplastic ratcheting solids

Jacinto Ulloa, Geert Degrande, Jose E. Andrade, Stijn Francois

Summary: This paper presents a multi-temporal formulation for simulating elastoplastic solids under cyclic loading. The proper generalized decomposition (PGD) is leveraged to decompose the displacements into multiple time scales, separating the spatial and intra-cyclic dependence from the inter-cyclic variation, thereby reducing computational burden.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)

Article Engineering, Multidisciplinary

Automated translation and accelerated solving of differential equations on multiple GPU platforms

Utkarsh Utkarsh, Valentin Churavy, Yingbo Ma, Tim Besard, Prakitr Srisuma, Tim Gymnich, Adam R. Gerlach, Alan Edelman, George Barbastathis, Richard D. Braatz, Christopher Rackauckas

Summary: This article presents a high-performance vendor-agnostic method for massively parallel solving of ordinary and stochastic differential equations on GPUs. The method integrates with a popular differential equation solver library and achieves state-of-the-art performance compared to hand-optimized kernels.

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING (2024)